Overview Of The Led Indications Of The Earbuds - Sennheiser CX 400BT Series Instruction Manual

Product overview
8 | CX 400BT True Wireless
LED
lights up
green
pulses
yellow
lights up
yellow
lights up
red
flashes
red
If the LED does not light up:
• Clean the contacts on the earbuds and in the charging case
(> 29).
• Charge the rechargeable batteries of the earbuds and the
charging case until the LED lights up again (> 14).
Overview of the LED indications of the
earbuds
Charging case WITH
earbuds inserted
... earbuds are fully
charged and the
charging case can
still charge at least
one complete cycle
... earbuds are being
charged via the
rechargeable bat-
tery of the charging
case
... earbuds are fully
charged, the
charging case
cannot charge
another complete
cycle
... rechargeable bat-
teries of the earbuds
and the charging
case are empty
... a charging error/
battery error has
been detected in at
least one earbud (>
30)
Charging case
WITHOUT earbuds
inserted
... charging case is
fully charged
–
... charging case is
charged less than 90
%
... rechargeable bat-
tery of the charging
case is empty
... a charging error/
battery error has
been detected in the
charging case (> 30)